1, 2-diphenyl-2-(4-methylpiperidino) ethanol salt of penicillin



Patented Oct. 6, 1953 UNITED STATES PATENT OFFICE 1,2 -DIPHENYL-2- 4-METHYLPIPERIDINO) ETHANOL SALT F PENICILLIN Harley W. Rhodehamel, Jr., Indianapolis, Ind.,

assignor to Eli Lilly and Company, Indianapolis, Ind., a corporation of Indiana N 0 Drawing. Application February 13, 1952, Serial No. 271,436

2 Claims. (01. 260-239.1)

This invention relates to a novel penicillin salt Example 2 fiivfi iliifiie ififii' 1,2-.fipheny1 2- an s-e a P of the emethylpiperidino)ethanol or its salts can be slum salt of Pemcmm G m of Water 15 added a solution of 0.3 g. of 1,2-d1phenyl-2-(4- combined with penicillin or its salts by neutral- 5 ization or metathetical reactions to form a spar- 2: 5 gigf gfigg gfig g gggfi igg a g;

ingly soluble penicillin salt, thereby affording a ocasionany'whereupon the Slightly soluble means of prgclpltatlpg Pemcmm from Solutmn diphenyl-2-(4-methylpiperidino)ethanol salt of and of purifying penicillin. Moreover, the novel penicillin G preci itates The Salt is Se penicillin salt can be utilized therapeutically. ted and dried in Vgcuo p A prolonged penicillin blood level can be secured d amr upon administering the salt parenterally by 1 The 2 methods known to the medical art.

The following examples illustrate the prepadiphenyl-2-(4-methylpiperidino) ethanol salt of penicillin represented by the following formula in which P represents penicillin:

ration of the novel salt of this invention:

Example 1 To 2 g. of a solution of penicillin (e. g. a commercial mixture of the several penicillins) dis- CHPCH, solved in 30 ml. of amyl acetate are added 2 g. of 1,2-diphenyl-2-(4-methylpiperidino)ethanol HO (EH CH dissolved in ml. of amyl acetate. The mix- P CHI-Cm ture is cooled and stirred occasionally where- 2. The 1,2 diphenyl-2-(4-methylpiperidino) upon the 1,2-diphenyl-2-(4-methylpiperidino) ethanol salt of penicillin G. ethanol salt of penicillin precipitates. The salt 25 HARLEY W. RHODEHAMEL, JR. is isolated as by decantation or filtration, and dried in vacuo. References Cited in the file of this patent The salt is represented by the following for- UNITED STATES PATENTS mula in which P represents penicillin:

Number Name Date 2,493,625 Goldberg et a1. Jan. 3, 1950 2,527,810 Goldberg et a1. Oct. 31, 1950 2,578,651 Buckwalter Dec. 18, 1951 I /CH:CH1 OTHER REFERENCES H0CH( 3'5 Kadison et al.: Am. Practitioner and Digest GHQ-CH, of Treatment, vol. 2, May 1951, pp. 411 to 412. 

1. THE 1,2 -DIPHENYL-2-(4-METHYLPIPERIDINO) ETHANOL SALT OF PENICILLIN REPRESENTED BY THE FOLLOWING FORMULA IN WHICH P REPRESENTS PENICILLIN: 